One New Aftermarket Replacement Voltage Regulator Fits Allis Chalmers, Long, Oliver, and White TractorsThis 12-volt voltage regulator is a component of the tractor electrical system, working to limit alternator output and protect the electrical system from overcharge. Designed for Fiat-based tractors equipped with an external regulator, this aftermarket replacement fits a wide range of Fits Allis Chalmers (AC), Long, Oliver, and White tractor models.Specifications Voltage: 12V Type: External voltage regulator Length: 3.96 in Width: 3.28 in Height: 2.13 in Weight: 0.24 lbs Compatible ModelsFits Allis Chalmers: 5040, 5050Long: 260C, 310, 310C, 320, 350, 350DT, 360, 360DT, 445, 445DT, 460, 460DT, 510, 510DT, 550, 550DT, 560, 560DTE, 610, 610DT, 2260, 2310, 2360, 2360DTC, 2460, 2460DTC, 2460 SD-DTC, 2510, 2510 SD-DTCOliver / White Minneapolis-Moline: 1250, 1250A, 1255, 1265, 1355, 1365, 1370, 1465, 1470, 2-50, 2-60Replaces Part Number(s):TX12129, TX12129-A, 21A600, 72093853, 72093853-A, 72093853V, 30-3042863, 30-3042863-A, 677486A, 677486A-AAftermarket Interchange NumbersS.67989 (Sparex), A-TX12129New aftermarket replacement part - not remanufactured, not used.